Grab bar



FIG. 1 is a fragmentary perspective view of a grab bar showing our new design;

FIG. 2 is a fragmentary front elevational view thereof;

FIG. 3 is a fragmentary rear elevational view thereof;

FIG. 4 is a fragmentary top plan view thereof; and,

FIG. 5 is a fragmentary bottom plan view thereof.

The portions of the Figures shown in broken lines are not part of the claimed design but are for illustration only. 

The ornamental design for a grab bar, as shown and described. 